Heat-regulator.



' 110.895.371 n Y PATENTBD AUG.4,'1908.

HEAT REGULATOR.

APPLIoATxoN Unna ocT. 31. 1901.

' Anon/vers GEORGE LCY IIOIPING, OF LONGHI-EACH, CALlFOR-NL,

HEAT-RE GULAT R.

To all whom it may concern.'

Be it known that I, Grzono Lor lloPriNG,

a citizen of the United States, and a resident of Longbench, in the county of Los Angeles and mate of California, have invented a new and Improved Heat-Regulator, of which the following is a full, clear, and exact descrip- The invention. relates to linotype and other machines requiring an even temperature of molten metal, air or other fluid.

The object of theinvention is to provide a new and improved heat regulator, which is simiz-ie and durable n construction, exceedingly sensitive in operation, and arranged to control the flow of the gas to the burners,

irrespective of the gas pressure.

The invention consists of novel features and parts and combinations of the same,

which will be more fully described herein-v after and then pointed out in the claims.

Apraetical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate `corresponding parts in all the views.

Figure 1 is a sideelevation of the improvement as arranged for use on a liiiotype machine: Fig. 2 is a sectional side elevation of the same, and Fig. 3 is a sectional plan view of the saine on the line 3--3 of Fig. 2. l

In machinesl of ihe class referred to, it'is essential that the temperature of the type met: `shall be kept at. a given point degrees, to obtain good results m the form of pi ci type bars from which to print. il a ier temperature gives porous slugs that crush under weight of printing machines, arid lower temperature gives poor printing faces to the type'in the way of imperfeetly formed letters, known as chilled faces.

Tile regulator heretofore used consists of a mercury bulb placed directly under and in front of the metal pot of the linotype, and takes the teni ierature of the metal as it is forced from tlie metal pot. into the lnold. Extending from the bulb upwards and outwards leads a pipe (one-eighth inch gas pipe), to a point about twelve inches away, where. it. connects with the regulator proper. At this point the gas is piped into the regulator and out again to the burners. The ailvancingr column of mercury, in itself, partly stops the flow of gas when the pri'iperteinperm-.1re is reached, and recedes when the pot has vchilled from putting in more pigs of Specification of ALetten-s1.- Patent. Application tiled October 31, 1907. i Serial No. 399,99-5.'

i i l Patented Aug.- 4, 1908.

metal, or drafts, or less gas pressu'e, or other causes.

The gas pressure must be maintained at a- ,very low point-151t inches wal-er pressure.

More pressure 'than this will displace the mercury and allow the gas to continue on to the burners, and as the extra temperature raises the mercury higher it is forced out along with the gas through the outlet down into the pipes leading to theburnels, leaving practically no mercury in the regulator and.

necessitating the taking out of the burners and pipesand emptying out the mercury to keep it from clogging the gas in the pi es.

To control t-he pressure and hold it this 0w,

a small mercury pressure governor isv sent with each single machine or a larger one for several niaehines.` These pressure govermors have the same faults as the heat regulator and are easily overcome by sudden extra pressure onl the. gas mains, which throws out the mercury and allows the pressure to continue on to the machine where it instantly uts the regulator out of commission, as aliovc described. Then sometimes the. pressure governor sticks, up 'or else down, which has the same inlluence on the machine regulators. Then again at times the pressure in the mains is most-ly air and the pressure governors then have to be weighted down to allow more of this poor quality gas to come to the machine in order to maintain the desired temperature. Later on, the. gas clears up and comes on without warning through the iifeighted down pressure governorand the extra heat raises the iner- 'cury higher and higher until it is finally foreed'out as described above. As a matter of fact, nine out of every ten linotypes are run without automatic heat reguhition for for the above reasons, although` supplied with these governors, the linotvpe operator governing his heat by turning his gas valve up and down all day long in-an endeaver to get the desired results, having become discouraged trying to sethis heat regulator and pressure governor so that they will do the work.

The heat regulator presently to be'described in detail screws on to the same fittings as the old regulator, using sii-me gas connections and mercury pipe and bulb. lVith its and none is used with it at' all. It is arranged so that no ordinarly gas pressure that. may come to it ear. possi ily overcome it.

As shown in the drawings, the cut-oil` gas chamber A is connected by a supply ipe B with a suitable gas supplv, and from t 1e Said chamber A leads a pipe for conducting the t gas to the burners employed for heating the metal in the melting pot. v

The chamber A is provided at the entrance end of the supply pipe B with a beveled valve seat l) for an oscillating eccentrically-disposed valve E, ulcrumed'at E in the chamber A; and having a curved face E2 for Bractically opening or closing the valve seat The oscillating valve E is connected 'with a depending chain Vor rod F, supporting at its lower end a float G, floating on the level Voi" a column H of mercury or like fluid contained in a pipe l, connected with the chamber A and with a bulb J. A

branch pipe K extends singularly from the pipe I below the level of the column H, and contains a plunger L, terminating in a screw rod L screwing in the threaded end of the branch pipe K, and normally locked in place by a jam uut N. Now when the jam nut N is loosened,the operator can screw the plunger L in or out in the branch pipe K, to raise or lower the level of the column H of mercury, and thus raise or lower the iloat G correspondingly. lYhen the desired position is reached the plunger L is locked in place by the jam nut N. The valve E is slight-ly overbalanced by the float G, so that when the float rises the valve E swings by itsown weight into a closing position, and when the tloat G'falls, it swings the valve E gradually o en.- By arranging the valve E as describe its position is not liable to be -disturbed by thegas pressure from the suply pipe. Now when the mercury column 10 rises, owing to being subjected to a higher temperature, the `loat G is lifted. and the valve E moves gradually into a closing posi- -tion, thus oradually cutting olf the supply of gas unt-il the mercury stops its upward movement.v

Y lhen the melting pot is supplied with more metal in the form of solid pigs, then the temperature of the' molten metal in the vpot and that of the lat-ter falls, whereby the temperature of the mercury in the cplumn H is reduced, and consequently falls, Aso that the tloatI G in descending with the columnofmercury acts on the valve E and swings the same correspondingly open, whereb;r more Gas is admitted to theI chamber A and to the 55 burners, for raising the temperature of the melting pot.

Frein the foregoing it will be seen that the valve E moves with the rise or fall of the temperature of the metal in the melting pot, and '60 consequently more or less gas is admitted to the burners for keeping the temperature uniform. Other causes liable to chill the metal in the melting pot., such as cold air blowing in from an open window, produce the same res ult.

`F rom the foregoing it will be seen that the movement of the'valve E is wholly independent of the pressure of the gas, and hence its positionis not liable to be disturbed by the gas pressure.

The chamber A is provided with a face plate A', (see Fig. 1), which wh n removed permits convenient access to the working parts for cleaning or repairing purposes.

Having thus described -my invention, I claim as new and desire to secure by L\etters Pat-entz. \1\

A heat regulator comprising a, `{cut-off chamber provided with a gas supplyland with a gas outlet, a valve seat at t-he en lince of the gas supply, said scat being incline ,al

Y mercury column and a. float weight supporti -ed by the column, a valve having a curVed-\` A face for cooperating with the inclined seat to S5 cut otl the supply of gas, said valve being pivotally mounted, a connection between the valve and thc float weight, said valve being. returned in normal position by the weight,

mercury in the column.

In testimony whereof 'I have signed my name to this specilication in the presence of two subscribing Witnesses.

GEORGE 'LOY HOPPING.

Witnesses:

E, lV. DAY, J. A. RosGEN.

i, nii

and means for regulating the height of the 

